The Student Council Treasurer and granddaughter of the principal. Like her position, she often thinks of how much something is going to cost, yelling at Yamata for kicking the metal door because overtime it could cause rust and have to be replaced which is expensive. She keeps track of the damage of what the gang causes and gives them a bill every time she runs into them. Saki is portrayed as being extremely weak and delicate, as she couldn't open a door Mitsuki could easily and just by trying injured her fingers, though Saya is jealous of her lack of strength because of all the attention Tadashi gives her from it. In a way she is displayed as Saya's opposite. Tadashi often bandages her which causes jealousy from Saya. Though if she gets angry enough, she displays a terrifying power and swears a lot, though she appears to be unaware of this. This scared even the Onigashirashu and Student Council to the point where they behaved for a whole week after the incident. She appears to be the only competent member of the Student Council, where the students will talk to her with issues rather than the President. She often blushes when Tadashi helps her, hinting either possible feelings for him or she's embarrassed by the attention, especially to the point that many people believe they are dating with how much he helps her out. She is starting to show feelings for him where she went to confront Saya (not knowing this was because of their date), speaking up to defend him, and going into a dazed state when she sees him. Due to Tadashi helping her everytime she asks and Kenji's words suggest that she is slowly getting fat, saying her legs make "squishy sounds" as well as her habit of adding chocolate to whatever she eats. Because of the sudden interest in getting her legs thinner, she has a habit of believing people are pointing out that she has fat legs.
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